Escaped quotes in strings aren't allowed

[jdghunt]

Escaped quotes in strings are highlighted by this highlighter but they are not legal syntax.

Example:
http://alogic-playground.argondesign.com/#N4IghgTg5gziBcIC0B7ABCgrgFzdlADgHRgA2KUAlgMYgA0IlAdgTgGKWkCmc8o+xMhRoIQAMxgBbNFwAeYSQW5pgAHSZo0zTZgAcaMAG51m7Wj1oARsY0Yc5/TBsm0ANxSUAJmklhmACgBKFRdNGDQAXgM0AGorG01NAAFPShglMABPf1VwNBhsCGYoNFUykAB3SmwACzQAR0wUbB4y3NzAhMSxLiZqLi6AX3VBkEHBoA==